What two conditions are essential for mold growth?

Mold growth requires specific conditions to thrive, and one of the most critical factors is the presence of moisture. A moist environment, combined with a poorly ventilated setting, creates an ideal breeding ground for mold spores. Mold needs water to grow, which can come from high humidity levels, leaks, or condensation. Poor ventilation exacerbates the situation because it prevents moisture from evaporating, allowing it to linger and creating a suitable environment for mold to propagate.

The other options do not promote mold growth effectively. For instance, high humidity and strong light might seem plausible, but most molds prefer darkness and do not thrive in consistently bright conditions. High temperatures with low humidity decrease moisture availability, which is counterproductive for mold growth. Dryness and darkness also do not provide the moisture necessary for mold spores to develop. Therefore, moisture combined with a poorly ventilated environment is indeed the correct condition that supports mold growth.